.backgroundImg 
    width 7.06rem
    height 3.68rem
    margin 0 auto
    position relative
    top -0.1rem
    .img_yuan
        position absolute
    .yuan1
        height 3rem
        left 0
        top 0
    .yuan2
        height 3rem
        right 0
        top 0.02rem
    .yuan3
        height 3rem
        right 0.1rem
        bottom 0.45rem
    .yuan4
        height 3rem
        left 0
        bottom 0.4rem
        // display none
    .markImg
        position absolute
    .mark_left1
        height 0.48rem
        left 0
        top 1.4rem
    .mark_left2
        height 0.48rem
        left 0.4rem
        top 2.8rem
    .mark_right1
        height 0.34rem
        right 0
        top 0.5rem
    .mark_right2
        height 0.7rem
        right 0
        top 1.3rem
    .mark_right3
        height 0.27rem
        right 0.5rem
        top 2.8rem